The Nexus 7 also does not emulate a mass storage device, only MTP and PTP are supported. Using Ubuntu 12.04 I can only access a subset of the Nexus 7's directory hierarchy related to the camera when using PTP. Currently, setting up fuse to allow access to MTP devices is not particularly intuitive but once set up correctly, MTP does seem to allow access to what appears to be the full directory structure of the device.
The Nexus 7 also does not emulate a mass storage device, only MTP and PTP are supported. Using Ubuntu 12.04 I can only access a subset of the Nexus 7's directory hierarchy related to the camera when using PTP. Currently, setting up fuse to allow access to MTP devices is not particularly intuitive but once set up correctly, MTP does seem to allow access to what appears to be the full directory structure of the device.